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一种新型软开关DC-DC变换器

http://www.dykf.com  2008/11/29  电源开发网

Abstract:A novel soft switching DC-DC converter is proposed and the principle of the converter is analyzed. The proposed novel DC-DC converter has realized the soft-switching of the main switch and the auxiliary switch and has higher efficiency than other topologies. The proposed converter will have a good application in power supply systems.

Keyword:Soft-Switching, DC-DC Converter

1 引言


图1 基本升压式变换器原理电路


2 基本评价





3 提出的新变换拓扑


图6 新型软开关变换器原理电路

  图6是提出的新型软开关变换器原理电路。在一个开关周期内分为11种工作模式。











4 实验结果

  输入电压:Vin=150V
  输出电压:Vo=340V
  输出功率:Po=1000W
  开关频率:f=50kHz


  从实验结果看,主功率开关和辅助功率开关均实现了软开关,且变换器效率较高。

5 结论



参考文献

[1] Zero-voltage-transition pulse-width-modulated converters
美国专利,专利号:5418704. 授权日:1995.05.23 发明人:Hua, et al.
[2] Technique for reducing rectifier reverse-recovery-related losses in high-voltage high power
converters. 美国专利,专利号:5736842. 授权日:1998.04.07发明人: Jovanovic
[3] Boost converter power supply with reduced losses, control circuit and method therefore
美国专利,专利号:5446366. 授权日: 1995.08.29发明人:Bassett, et al.
[4] Soft-switching cell for reducing switching losses in pulse-width-modulated converters
美国专利,专利号:6051961. 授权日:2000.04.18, Jang, et al.

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作者:陈丽敏  …  来源:《电源世界》  点击数:
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